title: Physiologic and pathologic levels of reactive oxygen species in neat semen of infertile men.
abstract: OBJECTIVE
  To define physiologic levels of reactive oxygen species in infertile men and establish a cutoff value of reactive oxygen species level in neat semen with a high sensitivity and specificity to differentiate infertile men from fertile donors (controls).
  
  
  METHODS
  Reactive oxygen species levels were measured in the neat semen samples (n = 51) from fertile donors and infertile patients (n = 54).
  
  
  METHODS
  Reproductive research laboratory at a tertiary care hospital.
  
  
  METHODS
  Infertile patients from male infertility clinic.
  
  
  METHODS
  Reactive oxygen species measurement in neat semen sample using luminol-based chemiluminescence method, receiver operating characteristic curves.
  
  
  METHODS
  Seminal reactive oxygen species levels, cutoff value, sensitivity and specificity, positive and negative predictive values.
  
  
  RESULTS
  The best cutoff value to distinguish between healthy fertile donors and infertile men was 0.0185 x 10(6) counted photons per minute/20 x 10(6) sperm. At this threshold, the specificity was 82% and the sensitivity was 78%. This value can be defined as basal reactive oxygen species level in infertile men.
  
  
  CONCLUSIONS
  Reactive oxygen species levels in neat semen samples as measured by luminol-based chemiluminescence are a highly specific and sensitive test in the diagnosis of infertility. This test also may help clinicians treat patients with seminal oxidative stress.
authors.affiliation: Department of Obstetrics and Gynecology, Center for Reproductive Medicine, Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, Ohio 44195, USA.
authors.forename: Nisarg
authors.initials: N
authors.lastname: Desai
authors.forename: Rakesh
authors.initials: R
authors.lastname: Sharma
authors.forename: Kartikeya
authors.initials: K
authors.lastname: Makker
authors.forename: Edmund
authors.initials: E
authors.lastname: Sabanegh
authors.forename: Ashok
authors.initials: A
authors.lastname: Agarwal
mesh_terms: D005298:Fertility / Q000502:physiology; D006801:Humans; D007248:Infertility, Male / Q000175:diagnosis / Q000378:metabolism* / Q000473:pathology; D008297:Male; D011237:Predictive Value of Tests; D012372:ROC Curve; D017382:Reactive Oxygen Species / Q000032:analysis* / Q000378:metabolism; D012016:Reference Values; D012661:Semen / Q000737:chemistry* / Q000378:metabolism; D055101:Semen Analysis; D012680:Sensitivity and Specificity
chemical_list: D017382:Reactive Oxygen Species